What is bizarre is maintaining against common sense that every OSX install would have been a Mac sale.

I never said that. Read more carefully.

From your first comment to me:

"The loss "incurred on Apple" is lost Mac computer sales."

A general 'loss of computer sales', not 'a lost computer sale'.

This is not saying that every hackintosh install is a lost computer sale for Apple. It just means that overall Apple's sales would be higher, even if only one in 10'000 of hackintosh users is dissuaded from buying a Mac.